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IRGen: Exclude classes defined in generic contexts from fast cast optimization

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This is a regression from https://github.com/apple/swift/pull/41784.

Fixes rdar://problem/93822961.
This commit is contained in:
Slava Pestov
2022-07-12 03:55:14 -04:00
parent 511bd67929
commit c80d8e6b1c
2 changed files with 22 additions and 2 deletions
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15
test/Casting/fast_class_casts.swift
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@@ -28,6 +28,7 @@ final class DerivedFromResilient : ResilientClasses.OpenBase {
}
final class Generic<T> : Classes.OpenBase {
final class Inner : Classes.OpenBase {}
}
// CHECK-LABEL: define {{.*}} @"$s4Main14castToNonfinaly7Classes0D0CSgAC4BaseCF"
@@ -102,6 +103,15 @@ func castToGeneric(_ b: Classes.OpenBase) -> Generic<Int>? {
return b as? Generic<Int>
}
// CHECK-LABEL: define {{.*}} @"$s4Main18castToGenericInneryAA0D0C0E0CySi_GSg7Classes8OpenBaseCF"
// CHECK: @swift_dynamicCastClass
// CHECK: }
@inline(never)
func castToGenericInner(_ b: Classes.OpenBase) -> Generic<Int>.Inner? {
return b as? Generic<Int>.Inner
}
// CHECK-LABEL: define {{.*}} @"$s4Main14getAnyHashableys0cD0VAA8InternalCF"
@inline(never)
func getAnyHashable(_ i: Internal) -> AnyHashable {
@@ -153,6 +163,11 @@ func test() {
print(castToGeneric(Classes.OpenBase()) as Any)
// CHECK-OUTPUT: Optional(Main.Generic<Swift.Int>)
print(castToGeneric(Generic<Int>()) as Any)
// CHECK-OUTPUT: nil
print(castToGenericInner(Classes.OpenBase()) as Any)
// CHECK-OUTPUT: Optional(Main.Generic<Swift.Int>.Inner)
print(castToGenericInner(Generic<Int>.Inner()) as Any)
}
test()